I have five nodes and a Hadoop with Cloudera Distribution is run on all of them. I would like to stop one node and install Hadoop with another version with Apache Distribution but I would like to have still working Hadoop with Cloudera Distribution on all four remaining nodes. Any ideas how can I uninstall Hadoop Cloudera Distribution only on this one node?
If I understand the question, you want to remove a node from your Cluster and install Apache Hadoop directly.
No requirement to preserve data.
You can got to "Hosts-> All Hosts" in Cloudera Manager, select the node and from Actions menu you can do sequentially:
Before you do the last step, stop and disable cloudera-scm-agent
# systemctl stop cloudera-scm-agent
# systemctl disable cloudera-scm-agent
Then, you can uninstall cloudera-scm-agent from this node, and install the Apache Hadoop.